Accuracy of extrapolation in the assumed p(λ_SAR | M_star, z, T) (Z24) using the parameter maps. The panels show different z, while the lines correspond to different M_star as indicated by the legend. Dotted lines indicate extrapolation beyond the formal limits log₁₀(M_star/M_⊙) < 9.5 or z > 4.0 using scipy.interpolate.RegularGridInterpolator. Given the uncertainties of the extrapolation (indicated most clearly in the top-left panel), in this work we choose to extrapolate by using they boundary values log₁₀(M_star/M_⊙) = 9.5 and/or z = 4.0, corresponding to the blue solid curve (where applicable).